Core structure for square lithium secondary battery has fastener inserted via through hole is fixed on base board such that conductive pressing piece is pressed against positive lead area or negative lead area

摘要

The core structure has electrode assembly (50) comprising positive layer (51), separating layer (52) and negative layer (53) are superposed on one another and are wound around base board (40). The positive and negative lead areas (511,531) protrude out of both sides of electrode assembly. The conductive fixing assembly (60) has fastener (61) which is inserted through a through hole of conductive pressing pieces (62) is fixed on base board such that conductive pressing piece is pressed against positive lead area or negative lead area.